Blasting device



Patented Feb. 1, 1927.

UNEEEQ STATES trieste VICTOR L. HOLT, OF PORTLAND, OREGON.

BLASTING DEVICE.

Application filed June 30, 1925. Serial No. 40,613.

My invention relates to devices for facilitating the placing of the charge of explosive, the objects being to provide a device thatis easily and safely handled, and that will conserve the force of the explosion and direct it into the desired direction. I accomplish these objects by means of the construction illustrated in the accompanying drawing, which is a part of this application for Letters Patent, like characters of reference indicating like parts throughout the several views thereof, and in which:

F ig. l is a sectional elevation of an object to he blown up, with my device in place therein.

Fig. 2 Fig. l.

Figs. 3 and 4: are perspective views of the two members of my device in their relative positions, but separated one from the other.

In general my device consists of a cylindrical plug adapted to lit the hole bored for the charge, said plug being longitudinally split, said split being disposed diagonally of the plug, so as to divide the plug into two wedge shaped porti-ons, a pocket formed in the large end of each of said portions, and a slot leading from said pocket to the smaller end of the plug portion.

The plug is thus formed of two substantially semi-cylindrical portions 5 and 6, each having a flat face 7, said face being disposed diagonally of the plug portion, thus forming each portion into a wedge.

In the large end of each of said wedge portions is formed a pocket 8 by cutting` away a portion of the cylindrical surface of the plug portion, and each ot' said pockets connected with the small end of its wedge 4o by a channel or slot 9.

The pockets are to receive the charge of explosive, and the channels are to receive the fuse therefrom. This is shown in F ig.

l, wherein the explosive cartridge is illustrated at 10 and the fuse at ll. In manufacturing the device one of the pockets 8 may be made larger than the other, and thus a large or a small explosive cartridge may be accommodated.

In use the explosive cartridge is placed in one of the pockets 8 with the fuse thereis a section upon line 2 2 of from lying within the respective slot 9, and the two portions of the plug, 5 and 6,* are placed with their flat faces 7 together, with one wedge portion extending longitudinally beyond the other at each end, as shown in F ig. l. lVhen in this position that wedge protruding from the hole, as 6 in Fig. l, may be driven into lace, thus wedging the device with its contained explosive cartridge firmly into place in the object to be operated upon. The explosive is then fired in thel usual manner. f

This device eliminates all the old methods of tamping the explosive in place with dirt, and is therefore safe and convenient and economical to use; and also it confines the force of the explosion, and directs it into the direction desired, thus allowing smaller charges of explosive to be used.

My device may be made of any size, and constructed of any materials deemed convenient and suitable for a device of this character, and while I have illustrated and described a form of construction found desirable in materializing my invention, I wish to include in this application all mechanical equivalents and substitutes that may fairly be considered to come within the scope and purview of my invention as deiined in the appended claims.

Having disclosed my invention so that others may be enabled to construct and to use the same, what I claim as new, and desire to secure by Letters Iatent is:

1. A cylindrical plug formed of two wedge shaped portions, each portion having a pocket in the cylindrical surface thereof,l and a slot connecting said pocket with the small end of said wedge shaped portion.

2. A plug dividedinto two wedge shaped portions by longitudinally diagonally disposed iiat faces upon each portion, each of said wedge shaped portions being provided with a receptacle for receiving a charge ot V explosive, and a channel for receiving the fuse from said explosive.

In witness-whereof I claim the foregoing as my own I hereby affix my signature at Portland, county of Multnomah, State of Oregon this 28th day of June, 1924.

VICTOR L. HLT. 

